1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
cestrela7 [59]
4 years ago
12

Complete the identity. cos (alpha - beta)/cos alpha cos beta=?

Mathematics
2 answers:
Gnoma [55]4 years ago
6 0
When you see a formula like this, try to operate, so you will see some identities sooner or later. In this case, we have a substraction identity:

\frac{cos ( \alpha  -  \beta )}{cos  \alpha cos  \beta } = \frac{cos   \alpha cos  \beta + sin \alpha sin  \beta }{cos  \alpha cos  \beta } = 1 + tan α · tan β
MatroZZZ [7]4 years ago
5 0

Answer:

When you see a formula like this, try to operate, so you will see some identities sooner or later. In this case, we have a substraction identity:

\frac{cos ( \alpha  -  \beta )}{cos  \alpha cos  \beta }  =  \frac{cos   \alpha cos  \beta + sin \alpha sin  \beta }{cos  \alpha cos  \beta }  = 1 + tan α · tan β

Step-by-step explanation:

You might be interested in
The value of a boat is $23,400. It loses 8% of its value every year. Find the approximate monthly percent decrease in value. Rou
DaniilM [7]

23400 x 8/100 = 1872 = the loss  

1872 : 12 = 156= the loss each month  

156/1872*100% = 8.33 % then round it

4 0
4 years ago
Read 2 more answers
Can you help me im confused. its the last 3 after 1a
Masja [62]
1.b 10
1.c. 17
1.d. 24
3 0
3 years ago
Read 2 more answers
HELP ME PLEASE
lesantik [10]
Use a ABC Indy and then you get doneBottle rocket launched what it what was the company’s profit was a
3 0
3 years ago
What is the perimeter of PQR? Show your work.
xz_007 [3.2K]
I do not know how to show the working out but its 4+6+6
3 0
3 years ago
Read 2 more answers
Write the expression as a square of a monomial. <br><br><br><br><br><br><br><br><br><br> a 81x^4
poizon [28]

Answer:

(9x²)²

Step-by-step explanation:

Given the expression 81x⁴, to write the expression as a square of a monomial, first we will assign a variable to the expression.

y = 81x⁴

Then we take the square root of both sides of the expression

√y = √81x⁴

y^½ = √81 × √x⁴

y^½ = 9x²

Squaring both sides of the resulting equation to get y back

(y^½)² = (9x²)²

y = (9x²)²

The expression as a square of a monomial is (9x²)²

7 0
3 years ago
Read 2 more answers
Other questions:
  • candy weighs a pumpkin at 12.23 pounds. if she splits it into four pieces, how much would each piece weigh ?
    13·2 answers
  • Twenty-five blue and twenty-five yellow marbles are placed in a jar. Thirty-four marbles are removed from the jar and put in a s
    10·1 answer
  • There is a list of seven numbers. The average of the first four numbers is 5, and the average of the last four numbers is 8. If
    8·1 answer
  • Find the negative square root of twenty
    13·1 answer
  • In the diagram below, DE is parallel to Y. What is the value of x
    11·1 answer
  • Please I want help I want a correct answer
    7·1 answer
  • Pls help
    6·2 answers
  • Can you help me for this math? ​
    14·2 answers
  • If f(x) = 2x - 4 and g(x)= -5x + 6, then what is f(g(x))?
    12·1 answer
  • Hellppppp
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!